DOI: 10.1126/science.aaw7493 ISSN:
Engineering bunched Pt-Ni alloy nanocages for efficient oxygen reduction in practical fuel cells
Xinlong Tian, Xiao Zhao, Ya-Qiong Su, Lijuan Wang, Hongming Wang, Dai Dang, Bin Chi, Hongfang Liu, Emiel J.M. Hensen, Xiong Wen (David) Lou, Bao Yu Xia- Multidisciplinary
Nanocage-chain fuel cell catalysts
The expense and scarcity of platinum has driven efforts to improve oxygen-reduction catalysts in proton-exchange membrane fuel cells. Tian et al. synthesized chains of platinum-nickel alloy nanospheres connected by necking regions. These structures can be etched to form nanocages with platinum-rich surfaces that are highly active for oxygen reduction. In fuel cells running on air and hydrogen, these catalysts operated for at least 180 hours.
Science
, this issue p.